package com.nostop.util;

import org.apache.commons.lang3.StringUtils;

public class LevelUtil {

    public final static String SEPARATOR = ".";

    public final static String ROOT = "0";

    /*
    * 0
    * 0.1
    * 0.1.2
    * 0.1.3
    * 0.4
    * */
    public static String calculateLevel(String parentLevel,int parentId) {
        if (StringUtils.isBlank(parentLevel)) {
            return ROOT;
        }else {
            return StringUtils.join(parentLevel,SEPARATOR,parentId);
        }
    }

}
